/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkImageAdaptor_hxx
#define itkImageAdaptor_hxx
#include "itkImageAdaptor.h"
#include "itkProcessObject.h"

namespace itk
{
/**
 * Constructor
 */
template <typename TImage, typename TAccessor>
ImageAdaptor<TImage, TAccessor>::ImageAdaptor()
{
  // Allocate an internal image.  A process object might try to allocate an
  // temporary image that is the same type as its input or output.  If that
  // image type is an adaptor, we need to make sure that an internal image is
  // available because the process object will not know to call SetImage on
  // the adaptor.
  m_Image = TImage::New();
}

template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::Allocate(bool initialize)
{
  m_Image->Allocate(initialize);
}
//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::Initialize()
{
  // call the superclass' method first; then delegate
  Superclass::Initialize();

  // delegation to internal image
  m_Image->Initialize();
}

template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetPixelContainer(PixelContainer * container)
{
  if (this->GetPixelContainer() != container)
  {
    m_Image->SetPixelContainer(container);
    this->Modified();
  }
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::Graft(const Self * imgData)
{
  // call the superclass' implementation
  Superclass::Graft(imgData);

  if (imgData)
  {
    // Now copy anything remaining that is needed
    this->SetPixelContainer(const_cast<Self *>(imgData)->GetPixelContainer());
  }
}


//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::Graft(const DataObject * data)
{
  if (data)
  {
    // Attempt to cast data to an ImageAdaptor
    const Self * imgData;

    try
    {
      imgData = dynamic_cast<const Self *>(data);
    }
    catch (...)
    {
      return;
    }

    if (imgData)
    {
      this->Graft(imgData);
    }
    else
    {
      // pointer could not be cast back down
      itkExceptionMacro(<< "itk::ImageAdaptor::Graft() cannot cast " << typeid(data).name() << " to "
                        << typeid(const Self *).name());
    }
  }
}

/**
 *
 */
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::PrintSelf(std::ostream & os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::OffsetValueType *
ImageAdaptor<TImage, TAccessor>::GetOffsetTable() const
{
  return m_Image->GetOffsetTable();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
typename ImageAdaptor<TImage, TAccessor>::IndexType
ImageAdaptor<TImage, TAccessor>::ComputeIndex(OffsetValueType offset) const
{
  return m_Image->ComputeIndex(offset);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::Update()
{
  Superclass::Update();

  m_Image->Update();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::UpdateOutputInformation()
{
  // call the superclass' method first, then delegate
  Superclass::UpdateOutputInformation();

  // delegation to internal image
  m_Image->UpdateOutputInformation();

  // As attributes such as the number of components may have changed
  // may need to update the accessor
  this->UpdateAccessor(m_Image.GetPointer());
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::UpdateOutputData()
{
  // call the superclass' method first, then delegate
  Superclass::UpdateOutputData();

  // delegation to internal image
  m_Image->UpdateOutputData();
  SetBufferedRegion(m_Image->GetBufferedRegion());
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::PropagateRequestedRegion()
{
  // call the superclass' method first, then delegate
  Superclass::PropagateRequestedRegion();

  // delegation to internal image
  m_Image->PropagateRequestedRegion();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetRequestedRegionToLargestPossibleRegion()
{
  // call the superclass' method first, then delegate
  Superclass::SetRequestedRegionToLargestPossibleRegion();

  // delegation to internal image
  m_Image->SetRequestedRegionToLargestPossibleRegion();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::CopyInformation(const DataObject * data)
{
  // call the superclass' method first, then delegate
  Superclass::CopyInformation(data);

  // delegation to internal image
  m_Image->CopyInformation(data);

  // As attributes such as the number of components may have changed
  // may need to update the accessor
  this->UpdateAccessor(m_Image.GetPointer());
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::SpacingType &
ImageAdaptor<TImage, TAccessor>::GetSpacing() const
{
  return m_Image->GetSpacing();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetSpacing(const SpacingType & spacing)
{
  // delegation to internal image
  m_Image->SetSpacing(spacing);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetSpacing(const double * spacing /*[Self::ImageDimension]*/)
{
  // delegation to internal image
  m_Image->SetSpacing(spacing);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetSpacing(const float * spacing /*[Self::ImageDimension]*/)
{
  // delegation to internal image
  m_Image->SetSpacing(spacing);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetOrigin(const PointType origin)
{
  // delegation to internal image
  m_Image->SetOrigin(origin);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetOrigin(const double * origin /*[Self::ImageDimension]*/)
{
  // delegation to internal image
  m_Image->SetOrigin(origin);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetOrigin(const float * origin /*[Self::ImageDimension]*/)
{
  // delegation to internal image
  m_Image->SetOrigin(origin);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::PointType &
ImageAdaptor<TImage, TAccessor>::GetOrigin() const
{
  return m_Image->GetOrigin();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetDirection(const DirectionType & direction)
{
  // delegation to internal image
  m_Image->SetDirection(direction);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::DirectionType &
ImageAdaptor<TImage, TAccessor>::GetDirection() const
{
  return m_Image->GetDirection();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetImage(TImage * image)
{
  m_Image = image;
  Superclass::SetLargestPossibleRegion(m_Image->GetLargestPossibleRegion());
  Superclass::SetBufferedRegion(m_Image->GetBufferedRegion());
  Superclass::SetRequestedRegion(m_Image->GetRequestedRegion());

  this->UpdateAccessor(m_Image.GetPointer());
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::InternalPixelType *
ImageAdaptor<TImage, TAccessor>::GetBufferPointer() const
{
  return m_Image->GetBufferPointer();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
typename ImageAdaptor<TImage, TAccessor>::InternalPixelType *
ImageAdaptor<TImage, TAccessor>::GetBufferPointer()
{
  return m_Image->GetBufferPointer();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::Modified() const
{
  Superclass::Modified();

  m_Image->Modified();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
ModifiedTimeType
ImageAdaptor<TImage, TAccessor>::GetMTime() const
{
  ModifiedTimeType mtime1, mtime2;

  mtime1 = Superclass::GetMTime();
  mtime2 = m_Image->GetMTime();

  return (mtime1 >= mtime2 ? mtime1 : mtime2);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetBufferedRegion(const RegionType & region)
{
  // call the superclass' method first, then delegate
  Superclass::SetBufferedRegion(region);

  // delegation to internal image
  m_Image->SetBufferedRegion(region);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::RegionType &
ImageAdaptor<TImage, TAccessor>::GetBufferedRegion() const
{
  // delegation to internal image
  return m_Image->GetBufferedRegion();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetLargestPossibleRegion(const RegionType & region)
{
  // call the superclass' method first, then delegate
  Superclass::SetLargestPossibleRegion(region);

  // delegation to internal image
  m_Image->SetLargestPossibleRegion(region);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::RegionType &
ImageAdaptor<TImage, TAccessor>::GetLargestPossibleRegion() const
{
  // delegation to internal image
  return m_Image->GetLargestPossibleRegion();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetRequestedRegion(const RegionType & region)
{
  // call the superclass' method first, then delegate
  Superclass::SetRequestedRegion(region);

  // delegation to internal image
  m_Image->SetRequestedRegion(region);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
void
ImageAdaptor<TImage, TAccessor>::SetRequestedRegion(const DataObject * data)
{
  // call the superclass' method first, then delegate
  Superclass::SetRequestedRegion(data);

  // delegation to internal image
  m_Image->SetRequestedRegion(data);
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
bool
ImageAdaptor<TImage, TAccessor>::VerifyRequestedRegion()
{
  // call the superclass' method first, then delegate
  Superclass::VerifyRequestedRegion();

  // delegation to internal image
  return m_Image->VerifyRequestedRegion();
}

//----------------------------------------------------------------------------
template <typename TImage, typename TAccessor>
const typename ImageAdaptor<TImage, TAccessor>::RegionType &
ImageAdaptor<TImage, TAccessor>::GetRequestedRegion() const
{
  // delegation to internal image
  return m_Image->GetRequestedRegion();
}
} // end namespace itk

#endif
